边坡稳定性分析水平条分法及其进化计算  

Horizontal Slice Method of Slope Stability Analysis Based on Evolutionary Algorithm

作　　者：陈昌富[1] 杨宇[1] 

机构地区：[1]湖南大学岩土工程研究所,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2004年第3期72-75,共4页Journal of Hunan University:Natural Sciences

基　　金：湖南省自然科学基金项目(No.03JJY3087);湖南省科技攻关项目(No.03GKY3129)

摘　　要：研究了层状边坡稳定性分析计算方法,提出了适合此类边坡稳定性分析的水平条分法.通过改进进化过程中的选择和复制机制以及交叉和变异操作,提高了进化算法的搜索效率和全局收敛性能,并据此提出了层状边坡稳定性分析和临界滑动面搜索改进进化算法.实例验证及对比分析表明本文方法与常用方法如Bishop法和Chen Morgenstern法的计算结果的误差在5%以内,适合于非均质边坡稳定性分析且能快速搜索到全局最优解.This paper studied the computing method for the stability analysis of layered strata slopes and developed the horizontal slice method (HSM) for such slopes. With the selection mode, crossover operation and mutating operation during the evolutionary process were improved, the computing efficiency and the searching capability of global optimal solution of genetic algorithm (GA) were increased. Based on this, this paper proposes a modified GA for the stability analysis and the critical slip surface searching of such slopes. Several examples were given to verify the presented method, and computing results showed that the errors between the results obtained with the proposed method and those obtained with other methods, such as Bishop's method and Chen-Morgenstern's method, were less than 5%.

关 键 词：边坡稳定 进化算法 水平条分法 临界滑动面 岩土工程 

分 类 号：TU457[建筑科学—岩土工程]